Hazard Warning Flasher: Description and Operation

CIRCUIT OPERATION
Power for the hazard flashers flows from the Power Distribution Center (PDC) to the ignition switch on circuit A1. The A1 circuit is protected by a 20 Amp fuse located in cavity 8 of the PDC. With the key in the ACCESSORY or RUN position, the ignition switch connects voltage from the A1 circuit to the A31 circuit.

Circuit A31 connects to the junction block and powers fuse 15. This is a 10 Amp fuse. From the fuse, circuit F13 supplies voltage to the combination flasher. The F13 circuit also supplies power to the windshield wipers and the rear window defogger relay.

Circuit A15 also supplies voltage to the combination flasher. This circuit is HOT at all times and is protected by a 20 Amp fuse located in cavity 6 of the PDC.

The L32 circuit connects between the combination flasher and the BUS bar that powers the turn signals and the hazard flasher internal to the switch.

When the hazard flashers are ON the multi-function switch connects circuit L32 to circuits L60 and L61. It also connects circuits L9l and Z1. Circuit Z1 is the ground path for the combination flasher and terminates at the instrument panel left side cowl.

Circuit L60 supplies voltage for the right front lamps and provides an input to the combined rear lighting module. Circuit L61 powers the left front lamps and provides an input to the combined rear lighting module. These circuits also splice and supply voltage for the indicator lamps in the instrument cluster.

Circuit L62 connects from the combined rear lighting module to the right rear lamps. Circuit L63 connects from the combined rear lighting module to the left rear lamps.